<template>
  <div
    ref="PieChartDom"
    :class="className"
    :style="{ height: height, width: width }"
  />
</template>

<script>
import { defineComponent, nextTick, ref, onMounted } from 'vue'

import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import resize from './mixins/resize'

export default defineComponent({
  name: 'PieChart',
  props: {
    className: {
      type: String,
      default: 'chart',
    },
    width: {
      type: String,
      default: '100%',
    },
    height: {
      type: String,
      default: '300px',
    },
  },
  setup() {
    let chart = null
    const { initResize } = resize()
    let PieChartDom = ref()

    const initChart = () => {
      chart = echarts.init(PieChartDom.value, 'macarons')
    }

    const setOptions = () => {
      chart.setOption({
        tooltip: {
          trigger: 'item',
          formatter: '{a} <br/>{b} : {c} ({d}%)',
        },
        legend: {
          left: 'center',
          bottom: '10',
          data: ['Industries', 'Technology', 'Forex', 'Gold', 'Forecasts'],
        },
        series: [
          {
            name: 'WEEKLY WRITE ARTICLES',
            type: 'pie',
            roseType: 'radius',
            radius: [15, 95],
            center: ['50%', '38%'],
            data: [
              { value: 320, name: 'Industries' },
              { value: 240, name: 'Technology' },
              { value: 149, name: 'Forex' },
              { value: 100, name: 'Gold' },
              { value: 59, name: 'Forecasts' },
            ],
            animationEasing: 'cubicInOut',
            animationDuration: 2600,
          },
        ],
      })
    }

    onMounted(() => {
      nextTick(() => {
        initChart()
        setOptions()
        initResize(chart)
      })
    })
    return { chart, PieChartDom }
  },
})
</script>
